The European Community has fulfilled its obligations from the first period of the Kyoto Protocol, as total GHG emissions in the first commitment period 2008–2012, with no sinks taken into account, were approximately 19% below the base year values. By imposing the maximum level of allowed sinks, Slovenia has exceeded the goal by about 3%.

In 2017, Slovenian GHG emissions slightly decreased and were by 1.3% lower than in 2016. Therefore, Slovenia is on track to achieve the EU goal, as non-ETS GHG emissions in 2017 were about 10.8% below the allocated emissions for 2017.

The quick rate of retreat of the Triglav Glacier, which began in the second half of the 20^th century, further accelerated throughout the 90s. Due to increasing intensity of ice thinning, outcropping rocks began to emerge in the middle of the glacier, which disintegrated into two parts in 1992. In the 21^st century, the glacier has been retreating at a slower rate. The last major recession of the glacier was registered after the above average hot summer of 2003. The process stalled in years with above-average snowfall in late spring.

Temperature observations show the trend of increasing maximum and minimum absolute temperatures in the period 1961–2015, which indicates global warming. The number of hot days is increasing, including the frequency of extremely hot days with daily maximum temperature above 35 °C. In the summer of 2013, the highest temperature ever recorded in Slovenia was measured for the second time in history, while local temperature records were broken at several temperature measurement sites. The number of days with temperatures below zero shows a decline.